Useful Linux commands

dpkg -l - Shows the installed packages

Running

Running Kubeadm init on a Debian Jessie errors because cgroups memory support is not enabled.

• Add "cgroup_enable=memory swapaccount=1" to GRUB_CMDLINE_LINUX
• Run update-grub2
• Reboot

Uninstall the default docker.io because it is only version 1.6.x.

Install docker-ce

Update security settings to use in Outlook client on Android with Office 365

I was using my Android device to access Office 365 and then one day after an update it changed so that whenever you started the client you were presented with the dialog:

Update security settings to use <email address>

If you click Update it presents you with a list of demands, including the right to erase all data, set password rules, etc. This was too much for me, so I went about trying to find out how to remove these restrictions.

Exchange 365 sets these by default. To bypass it you need to set a Mobile Device Management (MDM) policy and apply it to the users that you want.

Go to the Office admin site and search for "Mobile Device Management "(https://portal.office.com/EAdmin/Device/IntuneInventory.aspx).

Go to Office 365 Admin center and go to Groups
Add a new Security group - let's call it "Mobile phone users"

Go to Office 365 Admin center and go to Users > Active User
Select your user and select Edit
Edit the group membership for the user
Add the user to the Security Group "Mobile phone users"

Go to Data Loss Prevention > Device Security Policies
Create a Policy - let's call it "Access in Android"
Set your policy restrictions

Save the policy and apply the policy to "Mobile phone users":

No sound or lights on the Soundlink mini

To perform a reset on a SoundLink mini: 

Bypass the cradle and connect it directly to the power supply if you have not already. 
Press and hold the mute button for 10 seconds. 
The LEDs will flash briefly, then press the power button. 

Removing unnecessary installations from Raspbian

sudo apt-get purge libreoffice wolfram-engine sonic-pi scratch sudo apt-get autoremove

Forced Updates

I went to play a music CD on my XBox One and through my speaker system.
But starting up it told me a 3.7GB update was required.
I chose the "Skip and work offline" option.

I then went to play the music CD from the main menu.
But hold on - you need to be online to do that - so it tells me.

Yes, I can confirm you need to be online and download a 3.7GB update to PLAY A MUSIC CD.

The Xbox one is now no longer my default music centre as I'm sorry, I don't want to wait 30 minutes to download 3.7GB updates to....play a CD.

Installed by Enterprise Policy chrome extensions

Chrome may have extensions installed by Enterprise Group Policy.
Windows Group policy scripts are installed here:

"%WinDir%\System32\GroupPolicyUsers"
"%WinDir%\System32\GroupPolicy"

Removing these directories will remove the group policy.
Run gpupdate /force to update the machine.